反应分析法在黄土液化势评价中的应用

英文篇名：Application of Response Analysis Methods on Evaluation of Liquefaction Potential of Loess Site
中文刊名：西北地震学报
英文刊名：Northwestern Seismological Journal
作者：王谦 ; 王兰民 ; 袁中夏 ; 王峻
英文作者：WANG Qian 1 ; 2 ; 3 ; WANG Lan-min 1 ; 2 ; 3 ; YUAN Zhong-xia 1 ; 2 ; 3 ; WANG Jun 1 ; 2 ; 3(1.Lanzhou Institute of Seismology ; CEA ; Lanzhou 730000 ; China ; 2.Open Laboratory of Loess Earthquake Engineering ; CEA ; Lanzhou 730000 ; China ; 3.Geotechnical Disaster Prevention Engineering Technology Research Center of Gansu Province ; Lanzhou 730000 ; China)
中文关键词：黄土液化 ; 液化势评价 ; 反应分析法 ; 固原石碑塬
英文关键词：Loess liquefaction ; Evaluation of liquefaction potential ; Response analysis method ; Shibei tableland in Guyuan city
出版日期：2011-08-10
机构：中国地震局兰州地震研究所;中国地震局黄土地震工程开放实验室;甘肃省岩土防灾工程技术研究中心;
年：2011
期：S1
出版单位：西北地震学报

摘要

反应分析法是一种基于动三轴试验,并考虑场地地震危险性一种综合性饱和土体液化评价方法。本文对固原石碑塬黄土进行了动三轴液化试验,利用反应分析法对该场地饱和黄土液化势进行评价,并和海原地震中固原石碑塬黄土的实际液化情况对比。研究结果表明利用反应分析法对饱和黄土进行液化势评价的结果与实际震害相符,可在黄土地区建设工程场地地震液化势评价中广泛应用。
The response analysis method is a synthetical way for evaluating liquefaction potential of saturated soil,based on thd dynamic triaxial test result analysis combing with the earthquake share stress time history.In this paper,the dynamic triaxial test for the undisturbed loess samples from a loess site at Shibei tableland in Guyuan city,Ningxia Autonomous Region is done,and the liquefaction potential of the saturated loess is evaluated by using the response analysis method.The result show that the loess will be light liquefiable under seismic intensity ofⅦ,will be middling liquefiable under seismic intensity ofⅧ,and will be completely liquefiable under seismic intensity ofⅨ.The result is in consistency with true liquefaction damages in this region in 1920 Haiyuan earthquake.It is proposed that the response analysis method can wildly used in the construction projects of the loess region.

引文

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